Add a float DSP framework to libavutil

Move vector_fmul() from DSPContext to AVFloatDSPContext.

1 files changed, 41 insertions, 0 deletions

diff --git a/libavutil/x86/float_dsp_init.c b/libavutil/x86/float_dsp_init.c
new file mode 100644
index 0000000..10bb226
--- /dev/null
+++ b/libavutil/x86/float_dsp_init.c
@@ -0,0 +1,41 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "libavutil/cpu.h"
+#include "libavutil/float_dsp.h"
+
+extern void ff_vector_fmul_sse(float *dst, const float *src0, const float *src1,
+                               int len);
+extern void ff_vector_fmul_avx(float *dst, const float *src0, const float *src1,
+                               int len);
+
+void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
+{
+#if HAVE_YASM
+    int mm_flags = av_get_cpu_flags();
+
+    if (mm_flags & AV_CPU_FLAG_SSE && HAVE_SSE) {
+        fdsp->vector_fmul = ff_vector_fmul_sse;
+    }
+    if (mm_flags & AV_CPU_FLAG_AVX && HAVE_AVX) {
+        fdsp->vector_fmul = ff_vector_fmul_avx;
+    }
+#endif
+}